Structure for blocking oil supply hole of kick idle gear bearing portion

Abstract

A structure for blocking an oil supply hole of a kick idle gear bearing portion is provided in an internal combustion engine of a type wherein a kick starting mechanism is removably mounted for transmitting an input from a kick arm to a crank shaft by way of a kick idle gear rotatably supported by a counter shaft. When the kick starting mechanism is removed and a self stating mode is set, an oil supply hole of a bearing portion in the state that the kick idle gear of the counter shaft is removed is blocked by a blocking member having a slip preventive function. The blocking member includes an insertion portion inserted in the oil supply hole, and an abutment portion integrally formed with the insertion portion, which is abutted on the outer peripheral surface of the bearing portion.

What is claimed is: 
     
       1. A structure for blocking an oil supply hole of a kick idle gear bearing portion in an internal combustion engine wherein a kick starting mechanism is removably mounted for transmitting an input from a kick arm to a crankshaft by way of a kick idle gear rotatably supported by a counter shaft comprising: a case in which a kick starting mechanism is removably positioned;   a self starting mechanism;   a blocking member; and   an oil supply hole of a bearing portion exposed when the kick idle gear of the counter shaft is removed, said blocking member forming a closure for said oil supply hole and having a slip preventive function;   said blocking member including an insertion portion inserted in the oil supply hole, and an abutment portion integrally formed with the insertion portion, which is abutted on the outer peripheral surface of the bearing portion;   wherein said blocking member is a bar having a diameter being substantially the same as that of said oil supply hole, and one end of said bar is provided as said insertion portion while part of a bent portion is provided as said abutment portion.   
     
     
       2. The structure for blocking an oil supply hole of a kick idle gear bearing portion according to claim 1, wherein said insertion portion of said bar projects from said oil supply hole and extends along an outer surface of said counter shaft for retaining said blocking member relative thereto. 
     
     
       3. The structure for blocking an oil supply hole of a kick idle gear bearing portion according to claim 2, wherein said blocking member includes an extension portion extending from the portion of said blocking member which engages said counter shaft and projecting beneath the insertion portion of said bar. 
     
     
       4. The structure for blocking an oil supply hole of a kick idle gear bearing portion according to claim 3, wherein said extension portion extends outwardly from an axis of said counter shaft prior to projecting beneath the insertion portion of said bar. 
     
     
       5. A device for blocking an oil supply hole of a kick idle gear bearing portion in an internal combustion engine comprising: a blocking member including having a slip preventive function;   said blocking member having an insertion portion inserted in the oil supply hole and an abutment portion integrally formed with the insertion portion, said abutment portion being abutted on the outer peripheral surface of the kick idle gear bearing portion;   wherein said blocking member is a bar having a diameter being substantially the same as that of said oil supply hole, and one end of said bar is provided as said insertion portion while part of a bent portion is provided as said abutment portion.   
     
     
       6. The device for blocking an oil supply hole of a kick idle gear bearing portion according to claim 5, wherein said insertion portion of said bar projects from said oil supply hole and extends along an outer surface of said kick idle gear bearing portion for retaining said blocking member relative thereto. 
     
     
       7. The device for blocking an oil supply hole of a kick idle gear bearing portion according to claim 6, wherein said blocking member includes an extension portion extending from the portion of said blocking member which engages said kick idle gear bearing portion and projecting beneath the insertion portion of said bar. 
     
     
       8. The device for blocking an oil supply hole of a kick idle gear bearing portion according to claim 7, wherein said extension portion extends outwardly from an axis of said counter shaft prior to projecting beneath the insertion portion of said bar. 
     
     
       9. A blocking member for blocking an oil supply aperture formed in a bearing member, said blocking member including a bar comprising: an insertion portion located at one end of said bar and having a cross-sectional configuration substantially the same as a cross-sectional configuration of said oil supply aperture; and   an abutment portion affixed to said insertion portion for releasably mounting said blocking member relative to said bearing member.   
     
     
       10. The blocking member for blocking an oil supply aperture formed in a bearing member according to claim 9, wherein said insertion portion extends a distance and includes a bent portion for reversing a direction of extension of said insertion portion. 
     
     
       11. The blocking member for blocking an oil supply aperture formed in a bearing member according to claim 10, wherein said abutment portion includes a curved portion disposed adjacent to said bearing member for releasably securing said blocking member relative thereto. 
     
     
       12. The blocking member for blocking an oil supply aperture formed in a bearing member according to claim 11, and further including an extension portion initially extending outwardly from said abutment portion and subsequently projecting beneath the insertion portion.